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y (no uudel') E D EAMES' 2 Sheets-Sheet 1. Slide Valve.

No. 233,489. Patented Oct. 19, I880.

1 Pk o m um g7 Y6 w I N.PETER3| PHOTO-UTHOGRAPNER. WASWNGTOM D C.

E. D. EAMES. Slide Valve.

No. 233,489. atented Oct. 19, 1880.

w fg} P8,}: I H L Inveh/tvn' Mil-W N. PETERS, FHOTD-LITHOGRAPHER, WASHINGTON. D. C.

- UNITED STATES PATENT OFFICE.

ELISHA D. EAM ES,.OF WATEBTOWN, NEW YORK, ASSIGNOR TO EAMES VACUUM BRAKE COMPANY, OF SAME PLACE.

SLI DE-VALVE.

SPECIFICATION forming part of Letters Patent No. 233,489, dated October 19, 1880.

Application filed July 27, 1880. (No model.)

To all whom it may concern Be it known that I, ELIsH-A D. EAMES, a citizen of the United States, residing at Watertown, in the county of Jefferson and State of New York, have invented certain new and useful Improvements in Slide-Valves; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

My present invention relates to steam or other cut-off supply-valves; and it consists in the novel construction and arrangement of a valve and its parts, which will be hereinafter fully described, and then pointed out in the claims.

In the drawings, Figure 1 represents a section taken through the linexmof Fig. 3. Fig. 2 represents a section taken through the line y y of Fig. 1. Fig. 3 represents a section taken through the line 2 z of Fig. 1, and Fig. 4 a modified form of one part of the valve body or casmg.

In this description the valve A is shown in connection with an ejector of a vacuum-brake apparatus, and in which connection it is deemed more particularly for use; but it is obvious that it may he used and applied with equally good results at any point or in any connection where it is desired to control the supply of steam or other fluid.

In adapting the valve for use in connection with an ejector apparatus, B, the jacket I) is formed or cast with the flange portion f, having an opening, b and an annular recess formed therein for the reception of the valveseat 6. This valve-seat maybe constructed of any suitable metal 5 but I prefer to construct it of brass, having reference to its adaptability in forming a packing or gasket between the valve-casin g and the ejector-body, or between said valve-casing and the casting g.

The valve-seat e is preferably pierced with a rectangular-shaped opening, 6 and is covered by a flat slide-valve, 01, having a rack, 61, on its opposite face. This valve is supported by a ledge, 6, formed on the valve-seat.

Suitably stepped in the valve-casing A is a valve-stem, b, carrying a segment of a pinion, c, which works within the rack d on the back of slide-valve d. The valve-stein projects from the casing through the opening a, which is threaded to receive a packing -joint, (not shown,) and its end thus projecting is provided with a suitable operating-lever. (Also not shown.) The valve d is so arranged within the casing that it will cover and uncover the opening 0 according as the valve-stem and pinion is oscillated in either direction. This arrangement of valve also allows ot' a graduated adjustment with respect to the supply of steam or other fluid, and which is an important feature in connection with the vacuum system of brakes.

The valve-casingA is provided with a flange, a, corresponding with flange f of the ejector B or flange g of the modified part, g,of the valvecasing. These flanges are provided with suitable bolt-holes a The valve-casing is also provided with an annular projection, a, which projects within the annular recess formed in flange f or flange g, and abuts against the valve-seat e. A series of bolts, h, are then passed through the bolt-holes a in the flanged portions of the parts, and they are firmly secured together, the valve-seat metal intervening between the parts, forming an efficient packing or gasket. Theinduction steam-pipe has communication with the opening 0 in the valve casing.

In case it is desired to attach the valve to an ejector-casin g not havin gthe flan ge f formed thereon, or to any line of steam or other pipe, the modified portion of the casing 9 may be used, which has a corresponding flange, boltholes, and recess as the ejector-casing B, the opposite end, t, of which is threaded to fit the steam-induction opening in the ejector not provided with a flange, f. Or the ends 0 and i may be connected with any line of steam or other supply-pipe, from which it will be observed that by simply removing the bolts from the flanged portion of parts access may be readily had at any and all times to the valve in order to inspect or to remove the valve and valve-seat for renewal or repairs.

Having described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is-

1. A valve device consisting of slide-val \'e (I, having a rack formed on its rear face, the valveseat 0, having ledge e, and the valve-stem h, carrying the pinion e, substantially as described.

2. The combination of slide-valve 11, having a rack formed on its rear face, valve-seat e, and valve-stein 11, carrying: the pinion 1', the two parts of the valve-casing of which having:

flanges and bolts at their contacting: faces,

whereby the valve or valve-seat, or both, may be readily removed for the purposes of renewal or repair, substantially as described.

3. A valve-casing consisting of two parts having flanges and bolts at their contacting valve-seat c, interposed between the two to form a gasket or packing between them, substantially as set forth.

In testimony whereof I aflix my signature in i presence of two witnesses.

ELISHA l). EAMES.

Witnes s:

CHAS. I). BINGHAM, 1*. GOULDING. 

